swDuino is a program which I have developed for building interactive Human Machine Interfaces (HMIs) in just a couple of minutes. swDuino empowers client programs (desktop, web and mobile applications) to monitor and control Arduino using set of powerful Web APIs.It is a free, state-of-the-art, windows-based "Serial-to-Web" proxy software that drastically simplifies the streaming, two-way exchange of variables between Arduino and any client program which supports HTTP protocol. It comes with a dedicated Arduino library and an embedded, configurable, built-in Serial/COM and a multi-threaded HTTP/Web Server.Very interactive and stunning HMIs of your home, office, scientific rigs etc. can be build using swDuino. With these HMIs, one can control and monitor the devices that are connected with Arduino. Also, with swDuino, saving sensors' data into computer databases (e.g. SQL, MySQL, Oracle etc.) is not a hassle anymore.You can quickly learn from examples of interfacing swDuino with several platforms.For more information and downloading package (4 mb zip) from swDuino homepage.Commends, suggestions and feedback are welcome.